You would need a .039 gasket with a 4.41 bore, if you were 0 deck it would be 10.85 with an 80 cc combustion chamber and no valve notches. Your pistons don't have valve notches? They would knock you down to about 10.25


Now I need to pin those needles, got to feel that heat
Hear my motor screamin while I'm tearin up the street